Vibrator for high-frequency electromedical apparatus



w. H. BAILEY. VIBRATOR FOR HIGH FREQUENCY ELECTROMEDICAL APPARATUS.

APPLICATION FILED JUNE 2, I921- Patented Oct. 10, 1922.

Patented Oct. 10, 1922.

[UNITED].STATES. PATENT- OFFICE.

"WALTER- BAILEY, 0F TORONTO, ONTARIO,'CANADA,' ASSIGNOR T0 BRANSTON COMPANY, OFBUFFALO, NEW YORK.

CHARLES A.

- VIBRATOR FOR-HIGH-FREQUENCY ELECTRCMEDICAL APPARATUS.

Applicationfiled June 2, 1921. wa 474,551.

ToaZZ w/wmz't may concern:

Be it known [that I, WALTER H. BA ILEL Of the city of Toronto, in the county "of York, Province of Ontario, Canada, have invented certain new and useful Improvementsin Vibrators forHigh Frequency Electromedical Apparatus, of which the following a specification, j

Generators of high frequency alternat ng currents are now commonly employed for electro-medical purposes in which induction,

coils are used with a current of highjpotential passing through the primary winding of the coil and consequently through thevibrator. Usually the vibrator has been exposed outside thecasing'containing the rest of the apparatus, but to prevent all possibility of injury to the user it is desirable that the vibrator be enclosed. My object in the present invention, is to devise aconstruction in which the vibrator is enclosed within the easing of the apparatus, while the ineansfor the adjustment of the vibrator fromoutside the casing cannot possibly be .use'd by careless individuals. in such a way as to cause-damage to the ,adjusting'mea'ns.

I attain my object by means ofthe constructions hereinafter described .and illustrated in the accompanying drawings in which- I Fig. 1 is a vertical section of the casing of a generator of high. frequencyv currents showing the supporting means for the high frequency coil and the adjusting means for the Vibrator therefor in elevation;

Fig. 2 a plan View, partly in section, of the upper side of the parts embodying my invention; and

Fig. 3 a front elevation, partly in section, of Fig. 2.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

1 is a casing, which may be of any suitable form to contain and support the complete apparatus. As, however, the present invention is concerned only with the means of supporting the high frequency coil and the adjusting means therefor, these parts only are shown in the drawings. 2 is a bracket adapted to be secured within the casing and adapted also to support the coil core, vibrator and the vibrator adjusting means. This bracket is formed from an integral piece of sheet metal, which is stamped out outer end of thehole is counterbored, the

counterboreterminating in a shoulder 18.

The 'vibrator 15 is suitably secured to the plate 3 in proper position for co-operation withthe coil core and the back stop 9. The rod 8 has a head 16 formed on or secured thereto or is otherwise fitted for engagement with a coil spring 17 which engages the shoulder 18 and the head 16 and tends to retract the rod 8 and the back stop carried thereby. j i y The back stop 9;is suitably adjustedrelative to the .vibrator as follows. Preferably the spindle 6 is provided with a coned lower end 13 which acts as a wedge. The spindle is threadedinto the bearing member 5 and the coned end is adapted to project into the counterbore. I provide an antifriction member fitted in said counterbore and which is preferably a steel ball let-adapted to engage the coned end 13and the head 16. A stop 19 adapted to limit the outward movement of the ball ltis provided. It. is evidentthat by roating the spindle 6 in one direction that the tapered end 13 will push the back stop toward the vibrator against the action of the spring 17. If the spindle is rotated in the opposite direction it will allow the spring 17 to retract the back stop as hereinbefore described. 7

To prevent any damage to the different parts of the apparatus by a careless user the stop 19 is preferably threaded in the bottom of the bearing member 5 and in alinement with the spindle 6 and having its upper end projecting into the counterbore behind the ball 14. It is evident that the upper end of the stop 19 will limit the downward move ment of the spindle 6. A lock nut is provided on the top 19 to secure the latter in position after it has'been adjusted to permit only a desired range of movement of the back stop 9 relative to the vibrator.

Outside the casing the spindle is provided with the milled knob or hand wheel 20 by 4. Inan which it maybe turned, Usually a simple scaleand index may be provided for convenience in setting the adjustment. Into the hole for receiving the core 10 ofthe coil is pressed a bearing sleeve 11 inuwhichthe coil core is suitably held by the set screw 12.

From the above description it will be seen that I have provided means for satisfactorily attaining the object otmy-invention as set out in the preamble of this specification, 'What Iclaim as my invention is I 1. In an induction coil, the combination of ingand adap'ted to support a vibrator a rod carrying the back contact" of the vibrator and slidaloly snpported'in the bracket; a spring tending toretract said rod; a spindle threaded in the bracket and adapted to extend through the casing and provided with a coned end adapted to actuatethe slidable induction boil the combination'of a bracket adapted to be securedj'within a. casing and adapted to sup'porta vibrator; abearing' membersecure'd to said. bracket; :1 rod carrying" the back contact of the vibrator andslidably supportedin the bearing member? a. spring tending to retract said. rod ;",an

anti jfr'iction member slidably supported in said l'jeai'ing member and adapted to engage In an induction coil, the combination of signed Witnesses. Y

the outer .endof said trod; and a. spindle threaded in the bearing membersand adapted to extend through the casing and provided with arconed-endadapted.to engage the antit'riction memberito actuate the slidable rod. 5. In an induction coil the combination of a bracket adapted to-be secured Within a casing and adapted to support a vibrator; a

bearing membersecured to said bracket; a

rod carrying the back contact of the vibrator and shdably supported ,JIiitliG bearing membergafspringtending to retract said rod; an

anti-friction member slidably supported in said bearing member and adapted to engage the "outer end ofsaidrod and "a spindle threaded in thebearing member and adapted to extend through the casing and provided with a coned end adapted to engage the antifriction memberto actuate the 'slidable rod and a stop provided in' the bearing member adapted to limit the outward movement of the anti-friction member'and adapted to limit the downward fmovement of the spindle. 1 i

6. In an induction boil the combination of avibrator; a bearing member; a rod carrying the back contact of the vibrator and s'li'dably supported in the bearing member a springtending to retractsaidrod; an antifriction member slidably'supported in said bearing'meinber and'adapted to engage the outer end of said rod; and a spindle thread- 'edin the'bearing member and provided with a coned e n'd adapte d to engage the anti-fric- 'tion1neinber to actuate' the slidab'le rod.

Signed at Toronto Ontlthis 18th day of May 1921,- in the'presence' of the twonnder- I -"WALTmi H. BAIL Y, i lvitness v fz "I i l i 'JAMES'SQLA Tnoen, I 

